Seal-lock



,(Mode.)

` J. A. KIRBY.

, SEAL LOCK.

No; 356370. Patemafehl; 1887.'

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N. PETERS. Murmgmmf. wmvlngim. im;

Unirse rnrns nrnn'r @einen JAMES A. KIRBY, OF GHICAGG, ASSIGNDR OF ONE-HALF T ERNEST S6 BEXSON, OF COOK CGUNTY, ILLINOS.

SEALULOCK,

SPECIFICATION forming part of Letters Patent No. 356,770, dated February l, 1887.

Application filed Mey 1, 1886.

To @il whom- 'i may concern: r

Be it known that l', Jnirns A. Einer, a. 'citizen of the United States, residing et Ghicngo, illinois, have invented cert-nin new and useful improvements in Car-Door Seel-Locks, which desire to protect by Letters Patent of the United States, and of which the following isn specification.

W'itli enr-seals as heretofore constructed, while it lies been impossible to open the lock without breaking the Seel, and so leaving c record of the fact that entrance has been effected, it lies, nevertheless, been possible te brezil; the seni and open the lock secretlgT and Without attracting attention, and this fact lies led to frequent depredations of cnrs by employes and others in the yards, which wonid have been impossible had the breaking of the seal been necessarily accompanied by suoli e report or detonetion as to attract the attention of persons in the vicinityi The object of my present invention is, in edclltion to devising n seni-loci; of simple construction, and therefore cheep and certain in its notion, to provide n corneal which cannot be broken Without causing o sharp explosion; and to this end I propose to piece a detonoting cartridge of dynamite or other explosive ineterlni upon tile seel which will be exploded by any pressure or blow upon the seal` itself entdcient to brezil; it.

In the accompanying drawings, forming part oi this specicntion, Figure 1 is n perspective View of my improved seal-lool; ns it appears when attached to o. cer-door. Figs. 2, 3, and e nre perspective views of the several ports of the same. Fig. 5 is n vertical longitudinal cross-section teken npproximetely at the line o 5, Fig, l, showing the position of the parts when the lock is closed and the seal unbroken', and Fig. 6 represents e device with which the seal may be convenientlyr Isind safely broken.

The easing of the lock is mede in two parte, A and B, which, when fastened together by bolts or rivets c, forni praotiodly or single piece, and is provided with two chambers, G :ind D, in the larger of which, C, the locking devices are contained, and the sinn-ller of which serres es n seelcliember, end is of esize and shape to receive the Seel E, the latter being mede of glass or any other frengible materiel,

Serial No. :$00,767. (Model.)

:1nd provided with en explosive cartridge or Wefer, F.

The upper or principal chamber, C, is conipietely closed, except nt three points-namely,

zin opening, G, on the side ci' the piece B, for the entrance of the point of the hesp H; en opening, L et one end, through which enters one arm, k', of e two-armed slide-piece, K, the other erin, It, 0i' which enters en opening left for it in one end of the senlcliennbcr, and en opening et L, into which is inserted n carrierpieee, M, having on its inner end n springcatch, m, which, engaging with the catch on the point of the liasp, fornis with it e, springlock.

The carrier-piece M has on its outer end e ilenge, m', of sufficient Width to cover the end of the seel-climnber, which is left open for the introduction of the seal. This cnrrier-piece has also et its inner end two projecting iienges or lngs,lm"m", the former entering e groove or recess, b, out in the top of the casing. (See Fig. 4Q) This lng slides in the groove b and permits the carrier-piece id to have n limited amount of toned-fro motion inthe casing, the

engagement of the lng with the groove preventing tlie carrier-piece from being entirelywithdrewn freni the lool; and so displaced or lost.

A Springdetent, N, is fixed to the bottoni of the chamber() in such e position that its end engages with tlielng mf when the carrier-piece is pushed in, so that its heed closes the end of the casing. The carrier-piece is provided at its outer end With a bevel shoulder, ni",ni1ich ts in the opening,` L of tlieeharnber when the carrier-piece is pushed in, lint which permits seid piece to oe raised when pulled ont, so as to expose the opening to the seal-chamber and permit the introduction of the seal. The inner end ofinrin k is provided with nslioulder, k, of such a, size that it cannotlie withdrawn through the opening I in the end of the chainber. The slide-piece Kwill thus be capable of au limited movement forward and baci; in the ense. The inner end of the arm k', 1Where it projects over the sprlngdetent N, is beveled on its under side, so that when the erin is pushed in it depresses the spring to such en extent that it no longer engngcswitli the lug mm,- bnt when the erin is drawn ont the spring is end of the v IOO ving the carrier-piece free to rise and engage `the lug. The arm k and the carrier-piece M are mutually cut away on their sides, so asto engage with and closely iit upon each other, the arm k having aflange, k, projecting out over the end of the carrierpiece M, so that when the slide-piece K is pushed in the carrier-piece M will be pushed out.

When thc lock is to be applied, the carrierpiece M is pulled out and raised; so as to expose the end of the seal-chamber. The sealis inserted, the lower arm, k, of the slide-piece K being necessarily pushed out of the seal-chamber by the seal. The carrier-piece is then pushed home, where it is held by the engagement of springdetent Nwith lug m, and the lock is applied to the door and the hasp pushed in, its point being caught by the spring-catch m. The hasp can now be released only by withdraw- M and its spring-catch m; but the former can only be released from the spring N by pushing in the slide-piece K, and this in turn is impossible without removing the seal, which, as its chamber is closed by the flange m of the carrier-piece M, can be effected only by breaking it, which will be accompanied by the explosion of the cartridge.

It is evident that the special form of the slide-piece and carrier-piece which I have shown is not essential to the invention, and may be widely varied Without departing from its principle. So, too, the relative location of the spring-detent N andlug m may be varied between the two sliding parts and the casing, the gist of my invention lying in the use of a catch to .retain in its looking position one of the essential parts of the lock, which catch can only be released by the forcing apart of a slide-piece adapted to control it into the sealchamber.

The instrument shown in Fig. 6 is a plate of metal provided with a central projecting boss, O, and a point, P, and on its opposite side, with a second boss, Q, for receiving the blow of a hammer 0r other implement. The instrument is applied so that the boss O rests against the seal, and a bloar is then given to the outside of the plate or boss Q, the plate preventinginjury to the face of the operator from flying pieces of glass, and the point P serving to pick out 1t)he fragments of the seal from the seal-cham- In car-seals as previously made it has been common to place a spring-button under the seal,'which is pressed after the seal is broken, in order to open the lock. Such a construction or any construction which gives anything but an unbroken plate for the seal and cartridge to rest on would be badly adapted for use with an explosive seal, for the reason that the violent shock of the explosive would quickly cause the metal of the springs to deteriorate, and would in time warp any slender or fragile mechanism exposed to it. The feau ture of a releasing slide or key which passes -around outside of the casing from the sealchamber to the lock-chamber, leavin g the plate on which the seal rests unbroken, is therefore of importance.

Another feature of importance in my invention is the spring-lock in connection Withthe carrier-piece M, which closes the seal-chamber and secures the seal within it While the lock is still open. Previously in car-seals locks have been used which had to be closed at the time of placing the seal in the casing, there being no provision for fastening the seal into the lock so that it cannot be removed Without breaking until the look is applied to the car-door. This has caused inconvenience, because it is not desirable to entrust the seals to the yard-men, and it has therefore been necessary for the superintendent or other officer in charge to personally close each car. Vith my spring-lock, however, the seal may be placed in the seal-chamber by the superintendent or other officer in charge, and the slide-piece M pushed home, securing the seal in its place,so that it cannot be removed therefrom Without breaking it, and the lock entrusted in this form to the Workman, by Whom it may be applied to the car after the latter is iilled, thus dispensing with the necessity of personal supervision of the locking of the car by the officer.

I claim- 1. In a car-door seal, the combination, with a hasp, of a movable carrier-piece provided with a spring-catch which engages with said hasp, a spring-detent for holding said carrierpiece in position, a slide-piece adapted to control said detent, said slide-piece being provided With an arm which enters the seal-chamber when the slide-piece is moved to liberate the detent, and a frangible seal filling the sealchamber and preventing movement of the slide-piece until it is broken, substantially as described, and for the purpose set forth.

2. In a'car-door seal-lock, the combination of a casing provided with a seal-chamber open at one end, a movable carrier-piece provided With a spring-catch and with a flange closing the open` end of the seal-chamber, a springdetent for holding said carrier-piece in position, a slide-piece adapted to control said detent, said slide-piece being provided with an arm which enters the seal-chamber When the slide-piece is moved to liberate the detent, and a frangible seal filling the seal-chamber and preventing movement of the slide-piece until it is broken, substantially as described,and for the purpose set forth.

3. The combination of a car-door seal-lock, a frangible seal, an explosive wafer for the same, and a plate provided with a boss for breaking the seal, substantially as described.

4. The combination,in a ear-door seal-lock, of a casing provided with a seal-chamber, a frangible seal, a detent controlling the opening of the lock, and a slide-piece for releasing the detent passing from the seal-chamber outside of the casing into the lock-chamber,where by the breaking of the plate under the seal is avoided, substantially as described.

IIO

5. In a ear-door seal, the combination of e spring-lool: with e detenta for holding the same in its ioeked position end a frongible Seal provided with an explosive wafer controlling the moving of the detent, substantially as deseribed.

6. The combination, with :i springlook, of a movable ozurienpieoe, M, controlling by iis position the iooking and unlocking of the look= said piece M being provided with a flange which eloses,When said piece is pushed in, the opening of the seal-ehembel through which the seul is intioduced) a spring-detenta for hoiing said piece M in position, and a sliclepiece, K, adapted to Control said debent, said slideA piece K being provided with an zum, la, which enters the Seslehemberufhen the slide-piece K is moved to iiberate the deenuwhereby the seal may oe seeui'ed inthe seal-chamber without; possibiiitgy of removal unless broken bei fore the look is looked? subs'fanbielly as described. i

7. In e seel-loekhe combination oi" a hasp,

a springloek mechanism for receiving the hasp, a, Carrier-piece adapted to close the sealohambeuand also controlling the Condition of the spring-look mechanism as iegzirdsKA its preparation 'for the reception of the hasp, a spring-deinem for Said carrier-piece independeutof said lock mechanism, and. e. frangible seal controlling the operation of the said detent, substantially as and foi1 the purpose sei; forth.

8. The combination of the carrier-piece M, which completes the spring-look when pushed in, and also closes the seal-chamber, with a spring-debout therefor, and a. frangible seal provided with :in explosive Wafer controlling the operation of the debout, substantially as and for the purpose set foi'bh.

JAMES A. KIRBY.

Witnesses:

FREDERICK C. GOODWIN, AE. L. HUBER.. 

